What I love about stage dooring, and this may sound pathetic, is not interacting with the actors as such but watching and listening to the kind of antics that happen there.
For example, at the end of the next to normal tour listening while people are excited and waiting to meet Ripley but knowing she won't come out because she needed to rest her voice. Or people proudly saying how 'far' they've come to see the show (when I've never encountered someone who has travelled further than me).
People walking past wondering what is going on.
Watching people shove cameras and playbill's in BP's face as she gets into her car after the first preview of FOLLIES.
Also, it's interesting to see how actors approach signing things. Asa Somers would walk out with a pen in his hand ready and doesn't put it down until he has signed every willing participant he can find, while Emma Hunton more modestly doesn't carry a pen and doesn't walk out like a 'star', instead she slips out and mingles behaving wherever the crowd takes her.
Awkward hugging, awkward arms over shoulders for photos, awkward conversations, awkward compliments.
Indeed, I have tried talking to an actor at a stage door before and it didn't go well ("I love you..awkward silence") - I will just pay attention to what others are doing, I think!
We need a new thread like "Comments overhead in audiences etc.." but one for stage doors, I think.
Give me claws and a hunch, just away from this bunch.